Abm6/9 — Ab minor sixth added ninth chord

A minor triad with the sixth and the ninth added. The minor third is what separates it from the major 6/9, which otherwise uses the same added notes.

1 = Ab
b3 = Cb
5 = Eb
6 = F
9 = Bb

Symbol: Abm6/9
Root: Ab
Quality: Minor sixth added ninth
Family: added
Notes: Ab Cb Eb F Bb
Degree formula: 1 b3 5 6 9
Semitones from the root: 0 2 3 7 9
Distinct pitch classes: 5
Interval structure: Stacked from the root: 3 semitones, 4 semitones, 2 semitones, 5 semitones
Notation: Written m6/9. A tonic minor colour in jazz and in Brazilian music.
Key: Ab · Ab major / F minor key signature

Abm6/9 chord fingering chart, six strings, frets marked — Abm6/9 — fingering chart Diagram: Will Chan

Formula

The chord tones in order from the root, with the interval each one forms above it.

Degree	Note	Semitones	Interval from the root
1	Ab	0	Perfect unison
b3	Cb	3	Minor third
5	Eb	7	Perfect fifth
6	F	9	Major sixth
9	Bb	2	Major second

Inversions

An inversion is the same set of notes with a different one in the bass. The last column gives the distance of each note above the bass note, in semitones.

Inversion	Bass note	Degree in the bass	Notes above the bass	Semitones above the bass
root position	Ab	1	Ab – Cb – Eb – F – Bb	0 3 7 9 2
first inversion	Cb	b3	Cb – Eb – F – Bb – Ab	0 4 6 11 9
second inversion	Eb	5	Eb – F – Bb – Ab – Cb	0 2 7 5 8
third inversion	F	6	F – Bb – Ab – Cb – Eb	0 5 3 6 10
fourth inversion	Bb	9	Bb – Ab – Cb – Eb – F	0 10 1 5 7

Inversion

Bass note

Degree in the bass

Notes above the bass

Semitones above the bass

root position

Ab – Cb – Eb – F – Bb

0 3 7 9 2

first inversion

Cb – Eb – F – Bb – Ab

0 4 6 11 9

second inversion

Eb – F – Bb – Ab – Cb

0 2 7 5 8

third inversion

F – Bb – Ab – Cb – Eb

0 5 3 6 10

fourth inversion

Bb – Ab – Cb – Eb – F

0 10 1 5 7

Playable voicings

These shapes were found by searching the fretboard of a standard-tuned guitar (E A D G B E) rather than copied from a chord book. The search allows every string to sound or to be muted, rejects any shape with a muted string between two sounding strings, rejects any shape whose fretted notes span more than four frets (a five-fret window), requires every chord tone to be present, and then sorts what remains with root-position shapes first and the most compact, lowest shapes next. The shapes shown are the first six of that ordering; other orderings are possible at the same frets.

#	Shape (low string first)	Notes	Degrees	Bass	Span (frets)	Sounding strings
1	4-2-3-3-4-4 (6→1)	Ab B F Bb Eb Ab	1 b3 6 9 5 1	Ab	2	6
2	4-6-6-4-6-6 (6→1)	Ab Eb Ab B F Bb	1 5 1 b3 6 9	Ab	2	6
3	4-1-1-4-4-1 (6→1)	Ab Bb Eb B Eb F	1 9 5 b3 5 6	Ab	3	6
4	4-2-1-3-4-1 (6→1)	Ab B Eb Bb Eb F	1 b3 5 9 5 6	Ab	3	6
5	4-1-3-4-4-1 (6→1)	Ab Bb F B Eb F	1 9 6 b3 5 6	Ab	3	6
6	4-2-3-3-4-1 (6→1)	Ab B F Bb Eb F	1 b3 6 9 5 6	Ab	3	6

Shape numbers run from the lowest string to the highest, so the left-hand number is the sixth string (low E) in standard tuning. Multiple shapes are listed because a chord can be voiced several ways, and because a lower position is not always the better sounding one.

Related chords and scales

KeyEverything in Abscale, chords and neck map for this root
ScaleAb melodic minor (ascending)the scale this chord comes from
ChordAbm6the minor sixth it extends
ChordAbmthe triad underneath it
ChordAbm7the seventh chord on this root

Everything in Ab · All chords

KeyKey of AbAb Bb C Db Eb F G · Ab major / F minor
ScaleAb melodic minor (ascending)7 notes · 1 2 b3 4 5 6 7
ChordAbm6 — Minor sixth1 b3 5 6 · Ab Cb Eb F
ChordAbm — Minor1 b3 5 · Ab Cb Eb
ChordAbm7 — Minor seventh1 b3 5 b7 · Ab Cb Eb Gb
ChordAb6 — Sixth1 3 5 6 · Ab C Eb F
ChordAb6/9 — Sixth added ninth1 3 5 6 9 · Ab C Eb F Bb
ChordAbadd9 — Added ninth1 9 3 5 · Ab Bb C Eb

Everything in this key: Ab · Chords · Theory Atlas